Improvement in pitman-connections



s. HYDE.

PITMEN commcnons. No. 179.794. Patented Ju1' -11. 187 6.

WLTNES SES A INVENTOR Z d-m%-%% ATTORNEY 8. Pnomumoemrum WASHINGTON, uc,

UNITED... STATES PATENT Orrrcn.

FRANK S. HYDE, OF RUTHERFORD STATION, TENNESSEE.

IMPROVEMENT lN PITMAN CONNECTIONS.

Specification forming part of Letters Patent No. 79,794, dated July 11,1876; application filed I May 11, 1876. i.

To all whom it may concern:

Be it known that I, FRANK S. HYDE, of Rutherford Station, in the countyof- Gibson and Statejot' Tennessee, have invented a new and valuableImprovement in Pitman-Oonnections; and I do hereby declare that. thefollowing is a full, clear, and exact description of the constructionand operation of the same, reference being bad to the annexed drawings,making a part of this specification, and to the letters and figures ofreference marked thereon.

Figure l of the drawings is arepresentation ofa perspective view of myinvention. Fig. 2 is a sectional View of the same, taken in the verticalplane. Fig. 3 is a vertical sectional view at right. angles to the viewshown in Fig. 2.

This invention has relation to improvements in pitinan-connections forharvesters, thrashing-machines, and other purposes and it con-- sists inthe arrangement and novel construction of the various devices employed,whereby very important and useful results are obtained, as will be fullyunderstood from the following description.

In the annexed drawings, the letter A indicates the base-plate of myimproved pitmanconnection, having upon its upper surface a circularrecess, a, and a central rectangular perforation, a. This plate will bemade of steel, chilled iron, or of any other suitable metal, and isdesigned to be screwed or bolted, when used on harvesters, to thesickle-bar.

B represents the bearing-plate or bed, also formed of metal, which isseated on plate A. This bed is provided on its under side, which is aplane surface, with a projecting rabbet, c, of cylindrical form, adaptedto be received, and to fit snugly, in the circular recess a, abovedescribed, in the base A; and it is secured thereto, so as to have freerotation about its vertical axis, by means of a bolt, (1, the body ofwhich is rectangular,and of the same shape as the central aperture ofthe baseplate, through which it passes. This bolt passes through acircular perforation in the bearingplate, its large head at beingcountersunk into the same, and the said head is rounded or convex uponits upper end, as shown in Fig. 2, for a purpose hereinafter explained.It is also provided with a collar, 6, of cylindrical form, which willpermit the bearing-plate to rotate, while the bolt remains stationary,owing to the engagement of its rectangular portion 0 in thecorrespondingly- 'shaped perforation in the plate A.

The upper face of plate B is deeply concaved, as shown at f, Figs. 2 and3, its front and rear walls g being cut away in semicircular form, andvertical recesses 19 formed in its sides, for a purpose hereinafterexplained. Within this plate-or socket is seated ,the part h of asectional bearing, D, having upon. its under side a transverse rib,j,rounded upon its under side, and resting upon the convex head of thebolt 0. This section is confined in the socket-plate B by means of abolt, l, passing transversely through registering perforations in thesidewalls m and rib j, and it has a rocking or oscillating movement onthe head of the bolt. This construction relieves bolt lot all strainother'than that caused in holding the bearing in its bed or socket, theweight of the pitman being transferred altogether frour the bearing tothe bolt-head by rib j.

Section-h is provided at each side with a semi-cylindrical enlargement,at, having ascrewthreaded vertical recess, which is designed to receivethe screw-threaded bolt 0, by means of which the cap-section h issecured thereto, and these enlargements are received in the siderecesses 11 of plate B, the said recesses being reamed out at theirupper edges, so as not to interfere with the oscillation or rockingot'the bearing D. This section is also provided at its rear with an endwall, E, forming a component part of and cast therewith, this wallextending upward sufliciently to close the corresponding end of thecap-section It, and to form at each side an abutment, q, against whichthe edge flanges r of the said upper section will abut or rest when thetWo sections are put together.

F represents a soft-metal bearing, preferably ot' Babbitt metal orbrass, which is seated in section h, and is prevented from endwisedisplacement by means of an edge flange, s, on the front edge of thesaid section. This bearing is prismatic upon its under side, and it fitssnugly upon the correspondingly-shaped fioor of the lower section, beingthus prevented from axial displacement. In practice the inner end ofthis bearing will be interiorly rabbeted, a groove, t, being thus formedfor the reception of waste and oil. The edge flanges r of thecap-section fit snugly on the upper edges of lower section. providedwith perforated enlargements u, through which bolt 0 is passed into thescrewthreaded enlargements n, and with downwardl yu'ojectin g flanges 12upon their edges, which fit snugly around the lower section and itsenlargement, and effectually prevent it from being casually displaced.In practice the upper section of the oscillating bearing will beprovided with a box, G, closed by a hinged lid, w,'for the reception ofwaste, and the introduction of lubricants into the bearing.

What I claim as new, and desire to secure by Letters Patent, is-

1. In a pitman-connection, the combination of a bearing-plate, B, havingcylindrical rabbet 0, and with the base-plate A, having correspondingrecess a, and a pivot-bolt, G, having arectangular body. 6, a head, d,countersunk into plate B, and a collar, 6, substanr tially as specified.

2. The tubular bearing D, havii'igtransverse rib j, rounded upon itsunder side, and the bolt (J, having a roundedhead, d, tangential to thesaid rib, in combination with the rotating bearing plate or socket B,pivot 1, bolt 0, and base-plate A, substantially as specified.

3. The oscillating bearing D, having rib t,

They are also in combination with bolt 0, having a rounded or convex'head tangential to t-heisaid rib, substantially as specified.

4:. In combination, the rocking bearing D,

having enlargements n at each side, and the and the upper section 71/,having edgeflanges r, provided with perforated enlargements u,overlapping flanges v, and the screw-bolts 0,

' substantially as specified.

6. The lower section h of a: bearing, D, having end wall E, withflanking wings'q, the screw-threaded vertical enlargements n, and thelower tubular-transverse rib j, all. cast in one piece,substantially asspecified.

1 7. The bearing-socket B, having a plane. lower face, with rabbet 0, aconcavespherical Erecess, -f, concave end walls 9, and vertical siderecessesp, cast in one piece, substantially ;as specified.

f In testimony that I claim the above I have Ihereunto subscribed myname in the presence ot'two witnesses.

' FRANK S-ULE HYDE.

Witnesses J. N. ALPHIN, G. L. LEWIS.

